failure to assist with new broken car

We bought a second hand peogeout 207 from them. From the first day this car started giving problems. Less then 500km and in only 4 days the car was broken. We took the car into the shop to get checked. We were informed that the water pump. The Theromostat and the head gasket are broken and the damage came to R25000. The dealer told us once we get a qoute we must give it to him and they would see were they could help as they are honest business people. When we took the qoute to them they refused point blank to help out at all and told us there is nothing we can do.the mechanic told us the degree of damage the car had would of taken longer then 4 days to develop so they sold us a R140000 car they knew was broken. The owner of the company refuses to talk to us or even see us to discuss the car. Be very carefull buying a car from them as if there is a problem they will refuse to help mater what. They even advertised this car at 5 places at 5 prices so rather report the sale as spam and save people allot of money. Thanks to them i have a broken car with R25000 damage that they knew was broken and the refuse to help to add there service is embaresinly bad. So watch out for this company